| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrGLGpu_DEFINED |
| #define GrGLGpu_DEFINED |
| |
| #include "GrGLContext.h" |
| #include "GrGLIRect.h" |
| #include "GrGLPathRendering.h" |
| #include "GrGLProgram.h" |
| #include "GrGLRenderTarget.h" |
| #include "GrGLStencilAttachment.h" |
| #include "GrGLTexture.h" |
| #include "GrGLVertexArray.h" |
| #include "GrGpu.h" |
| #include "GrPipelineBuilder.h" |
| #include "GrTypes.h" |
| #include "GrXferProcessor.h" |
| #include "SkTArray.h" |
| #include "SkTypes.h" |
| |
| class GrGLBuffer; |
| class GrPipeline; |
| class GrNonInstancedMesh; |
| class GrSwizzle; |
| |
| #ifdef SK_DEBUG |
| #define PROGRAM_CACHE_STATS |
| #endif |
| |
| class GrGLGpu final : public GrGpu { |
| public: |
| static GrGpu* Create(GrBackendContext backendContext, const GrContextOptions& options, |
| GrContext* context); |
| ~GrGLGpu() override; |
| |
| void disconnect(DisconnectType) override; |
| |
| const GrGLContext& glContext() const { return *fGLContext; } |
| |
| const GrGLInterface* glInterface() const { return fGLContext->interface(); } |
| const GrGLContextInfo& ctxInfo() const { return *fGLContext; } |
| GrGLStandard glStandard() const { return fGLContext->standard(); } |
| GrGLVersion glVersion() const { return fGLContext->version(); } |
| GrGLSLGeneration glslGeneration() const { return fGLContext->glslGeneration(); } |
| const GrGLCaps& glCaps() const { return *fGLContext->caps(); } |
| |
| GrGLPathRendering* glPathRendering() { |
| SkASSERT(glCaps().shaderCaps()->pathRenderingSupport()); |
| return static_cast<GrGLPathRendering*>(pathRendering()); |
| } |
| |
| void discard(GrRenderTarget*) override; |
| |
| // Used by GrGLProgram to configure OpenGL state. |
| void bindTexture(int unitIdx, const GrTextureParams& params, bool dstConfigAllowsSRGB, |
| GrGLTexture* texture); |
| |
| void bindTexelBuffer(int unitIdx, intptr_t offsetInBytes, GrPixelConfig, GrGLBuffer*); |
| |
| bool onGetReadPixelsInfo(GrSurface* srcSurface, int readWidth, int readHeight, size_t rowBytes, |
| GrPixelConfig readConfig, DrawPreference*, |
| ReadPixelTempDrawInfo*) override; |
| |
| bool onGetWritePixelsInfo(GrSurface* dstSurface, int width, int height, |
| GrPixelConfig srcConfig, DrawPreference*, |
| WritePixelTempDrawInfo*) override; |
| |
| bool initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) const override; |
| |
| // These functions should be used to bind GL objects. They track the GL state and skip redundant |
| // bindings. Making the equivalent glBind calls directly will confuse the state tracking. |
| void bindVertexArray(GrGLuint id) { |
| fHWVertexArrayState.setVertexArrayID(this, id); |
| } |
| |
| // These callbacks update state tracking when GL objects are deleted. They are called from |
| // GrGLResource onRelease functions. |
| void notifyVertexArrayDelete(GrGLuint id) { |
| fHWVertexArrayState.notifyVertexArrayDelete(id); |
| } |
| |
| // Binds a buffer to the GL target corresponding to 'type', updates internal state tracking, and |
| // returns the GL target the buffer was bound to. |
| // When 'type' is kIndex_GrBufferType, this function will also implicitly bind the default VAO. |
| // If the caller wishes to bind an index buffer to a specific VAO, it can call glBind directly. |
| GrGLenum bindBuffer(GrBufferType type, const GrGLBuffer*); |
| |
| // Called by GrGLBuffer after its buffer object has been destroyed. |
| void notifyBufferReleased(const GrGLBuffer*); |
| |
| const GrGLContext* glContextForTesting() const override { |
| return &this->glContext(); |
| } |
| |
| void clearStencil(GrRenderTarget*) override; |
| |
| void invalidateBoundRenderTarget() { |
| fHWBoundRenderTargetUniqueID = SK_InvalidUniqueID; |
| } |
| |
| GrStencilAttachment* createStencilAttachmentForRenderTarget(const GrRenderTarget* rt, |
| int width, |
| int height) override; |
| |
| GrBackendObject createTestingOnlyBackendTexture(void* pixels, int w, int h, |
| GrPixelConfig config) override; |
| bool isTestingOnlyBackendTexture(GrBackendObject) const override; |
| void deleteTestingOnlyBackendTexture(GrBackendObject, bool abandonTexture) override; |
| |
| void resetShaderCacheForTesting() const override; |
| |
| void drawDebugWireRect(GrRenderTarget*, const SkIRect&, GrColor) override; |
| |
| void finishDrawTarget() override; |
| |
| private: |
| GrGLGpu(GrGLContext* ctx, GrContext* context); |
| |
| // GrGpu overrides |
| void onResetContext(uint32_t resetBits) override; |
| |
| void xferBarrier(GrRenderTarget*, GrXferBarrierType) override; |
| |
| GrTexture* onCreateTexture(const GrSurfaceDesc& desc, SkBudgeted budgeted, |
| const SkTArray<GrMipLevel>& texels) override; |
| GrTexture* onCreateCompressedTexture(const GrSurfaceDesc& desc, |
| SkBudgeted budgeted, |
| const SkTArray<GrMipLevel>& texels) override; |
| |
| GrBuffer* onCreateBuffer(size_t size, GrBufferType intendedType, GrAccessPattern, |
| const void* data) override; |
| GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&, GrWrapOwnership) override; |
| GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&, |
| GrWrapOwnership) override; |
| GrRenderTarget* onWrapBackendTextureAsRenderTarget(const GrBackendTextureDesc&) override; |
| // Given a GrPixelConfig return the index into the stencil format array on GrGLCaps to a |
| // compatible stencil format, or negative if there is no compatible stencil format. |
| int getCompatibleStencilIndex(GrPixelConfig config); |
| |
| |
| // Returns whether the texture is successfully created. On success, the |
| // result is stored in |info|. |
| // The texture is populated with |texels|, if it exists. |
| // The texture parameters are cached in |initialTexParams|. |
| bool createTextureImpl(const GrSurfaceDesc& desc, GrGLTextureInfo* info, |
| bool renderTarget, GrGLTexture::TexParams* initialTexParams, |
| const SkTArray<GrMipLevel>& texels); |
| |
| void onClear(GrRenderTarget*, const SkIRect& rect, GrColor color) override; |
| |
| void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideClip) override; |
| |
| bool onMakeCopyForTextureParams(GrTexture*, const GrTextureParams&, |
| GrTextureProducer::CopyParams*) const override; |
| |
| // Checks whether glReadPixels can be called to get pixel values in readConfig from the |
| // render target. |
| bool readPixelsSupported(GrRenderTarget* target, GrPixelConfig readConfig); |
| |
| // Checks whether glReadPixels can be called to get pixel values in readConfig from a |
| // render target that has renderTargetConfig. This may have to create a temporary |
| // render target and thus is less preferable than the variant that takes a render target. |
| bool readPixelsSupported(GrPixelConfig renderTargetConfig, GrPixelConfig readConfig); |
| |
| // Checks whether glReadPixels can be called to get pixel values in readConfig from a |
| // render target that has the same config as surfaceForConfig. Calls one of the the two |
| // variations above, depending on whether the surface is a render target or not. |
| bool readPixelsSupported(GrSurface* surfaceForConfig, GrPixelConfig readConfig); |
| |
| bool onReadPixels(GrSurface*, |
| int left, int top, |
| int width, int height, |
| GrPixelConfig, |
| void* buffer, |
| size_t rowBytes) override; |
| |
| bool onWritePixels(GrSurface*, |
| int left, int top, int width, int height, |
| GrPixelConfig config, |
| const SkTArray<GrMipLevel>& texels) override; |
| |
| bool onTransferPixels(GrSurface*, |
| int left, int top, int width, int height, |
| GrPixelConfig config, GrBuffer* transferBuffer, |
| size_t offset, size_t rowBytes) override; |
| |
| void onResolveRenderTarget(GrRenderTarget* target) override; |
| |
| void onDraw(const GrPipeline&, |
| const GrPrimitiveProcessor&, |
| const GrMesh*, |
| int meshCount) override; |
| |
| bool onCopySurface(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) override; |
| |
| void onGetMultisampleSpecs(GrRenderTarget*, |
| const GrStencilSettings&, |
| int* effectiveSampleCnt, |
| SkAutoTDeleteArray<SkPoint>* sampleLocations) override; |
| |
| // binds texture unit in GL |
| void setTextureUnit(int unitIdx); |
| |
| void setTextureSwizzle(int unitIdx, GrGLenum target, const GrGLenum swizzle[]); |
| |
| // Flushes state from GrPipeline to GL. Returns false if the state couldn't be set. |
| bool flushGLState(const GrPipeline& pipeline, const GrPrimitiveProcessor& primProc); |
| |
| // Sets up vertex attribute pointers and strides. On return indexOffsetInBytes gives the offset |
| // an into the index buffer. It does not account for vertices.startIndex() but rather the start |
| // index is relative to the returned offset. |
| void setupGeometry(const GrPrimitiveProcessor&, |
| const GrNonInstancedMesh& mesh, |
| size_t* indexOffsetInBytes); |
| |
| void flushBlend(const GrXferProcessor::BlendInfo& blendInfo, const GrSwizzle&); |
| |
| bool hasExtension(const char* ext) const { return fGLContext->hasExtension(ext); } |
| |
| bool copySurfaceAsDraw(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint); |
| void copySurfaceAsCopyTexSubImage(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint); |
| bool copySurfaceAsBlitFramebuffer(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint); |
| |
| void stampPLSSetupRect(const SkRect& bounds); |
| |
| void setupPixelLocalStorage(const GrPipeline&, const GrPrimitiveProcessor&); |
| |
| static bool BlendCoeffReferencesConstant(GrBlendCoeff coeff); |
| |
| class ProgramCache : public ::SkNoncopyable { |
| public: |
| ProgramCache(GrGLGpu* gpu); |
| ~ProgramCache(); |
| |
| void abandon(); |
| GrGLProgram* refProgram(const GrGLGpu* gpu, const GrPipeline&, const GrPrimitiveProcessor&); |
| |
| private: |
| enum { |
| // We may actually have kMaxEntries+1 shaders in the GL context because we create a new |
| // shader before evicting from the cache. |
| kMaxEntries = 128, |
| kHashBits = 6, |
| }; |
| |
| struct Entry; |
| |
| struct ProgDescLess; |
| |
| // binary search for entry matching desc. returns index into fEntries that matches desc or ~ |
| // of the index of where it should be inserted. |
| int search(const GrProgramDesc& desc) const; |
| |
| // sorted array of all the entries |
| Entry* fEntries[kMaxEntries]; |
| // hash table based on lowest kHashBits bits of the program key. Used to avoid binary |
| // searching fEntries. |
| Entry* fHashTable[1 << kHashBits]; |
| |
| int fCount; |
| unsigned int fCurrLRUStamp; |
| GrGLGpu* fGpu; |
| #ifdef PROGRAM_CACHE_STATS |
| int fTotalRequests; |
| int fCacheMisses; |
| int fHashMisses; // cache hit but hash table missed |
| #endif |
| }; |
| |
| void flushColorWrite(bool writeColor); |
| void flushDrawFace(GrPipelineBuilder::DrawFace face); |
| |
| // flushes the scissor. see the note on flushBoundTextureAndParams about |
| // flushing the scissor after that function is called. |
| void flushScissor(const GrScissorState&, |
| const GrGLIRect& rtViewport, |
| GrSurfaceOrigin rtOrigin); |
| |
| // disables the scissor |
| void disableScissor(); |
| |
| void initFSAASupport(); |
| |
| // determines valid stencil formats |
| void initStencilFormats(); |
| |
| // sets a texture unit to use for texture operations other than binding a texture to a program. |
| // ensures that such operations don't negatively interact with tracking bound textures. |
| void setScratchTextureUnit(); |
| |
| // bounds is region that may be modified. |
| // nullptr means whole target. Can be an empty rect. |
| void flushRenderTarget(GrGLRenderTarget*, const SkIRect* bounds, bool disableSRGB = false); |
| // Handles cases where a surface will be updated without a call to flushRenderTarget |
| void didWriteToSurface(GrSurface*, const SkIRect* bounds, int mipLevels = 1) const; |
| |
| // Need not be called if flushRenderTarget is used. |
| void flushViewport(const GrGLIRect&); |
| |
| void flushStencil(const GrStencilSettings&); |
| |
| // rt is used only if useHWAA is true. |
| void flushHWAAState(GrRenderTarget* rt, bool useHWAA, bool stencilEnabled); |
| |
| void flushMinSampleShading(float minSampleShading); |
| |
| // helper for onCreateTexture and writeTexturePixels |
| enum UploadType { |
| kNewTexture_UploadType, // we are creating a new texture |
| kWrite_UploadType, // we are using TexSubImage2D to copy data to an existing texture |
| kTransfer_UploadType, // we are using a transfer buffer to copy data |
| }; |
| bool uploadTexData(const GrSurfaceDesc& desc, |
| GrGLenum target, |
| UploadType uploadType, |
| int left, int top, int width, int height, |
| GrPixelConfig dataConfig, |
| const SkTArray<GrMipLevel>& texels); |
| |
| // helper for onCreateCompressedTexture. If width and height are |
| // set to -1, then this function will use desc.fWidth and desc.fHeight |
| // for the size of the data. The isNewTexture flag should be set to true |
| // whenever a new texture needs to be created. Otherwise, we assume that |
| // the texture is already in GPU memory and that it's going to be updated |
| // with new data. |
| bool uploadCompressedTexData(const GrSurfaceDesc& desc, |
| GrGLenum target, |
| const SkTArray<GrMipLevel>& texels, |
| UploadType uploadType = kNewTexture_UploadType, |
| int left = 0, int top = 0, |
| int width = -1, int height = -1); |
| |
| bool createRenderTargetObjects(const GrSurfaceDesc&, const GrGLTextureInfo& texInfo, |
| GrGLRenderTarget::IDDesc*); |
| |
| enum TempFBOTarget { |
| kSrc_TempFBOTarget, |
| kDst_TempFBOTarget |
| }; |
| |
| // Binds a surface as a FBO for a copy operation. If the surface already owns an FBO ID then |
| // that ID is bound. If not the surface is temporarily bound to a FBO and that FBO is bound. |
| // This must be paired with a call to unbindSurfaceFBOForCopy(). |
| void bindSurfaceFBOForCopy(GrSurface* surface, GrGLenum fboTarget, GrGLIRect* viewport, |
| TempFBOTarget tempFBOTarget); |
| |
| // Must be called if bindSurfaceFBOForCopy was used to bind a surface for copying. |
| void unbindTextureFBOForCopy(GrGLenum fboTarget, GrSurface* surface); |
| |
| SkAutoTUnref<GrGLContext> fGLContext; |
| |
| bool createCopyProgram(int progIdx); |
| bool createWireRectProgram(); |
| bool createPLSSetupProgram(); |
| |
| // GL program-related state |
| ProgramCache* fProgramCache; |
| |
| /////////////////////////////////////////////////////////////////////////// |
| ///@name Caching of GL State |
| ///@{ |
| int fHWActiveTextureUnitIdx; |
| GrGLuint fHWProgramID; |
| |
| enum TriState { |
| kNo_TriState, |
| kYes_TriState, |
| kUnknown_TriState |
| }; |
| |
| GrGLuint fTempSrcFBOID; |
| GrGLuint fTempDstFBOID; |
| |
| GrGLuint fStencilClearFBOID; |
| |
| // last scissor / viewport scissor state seen by the GL. |
| struct { |
| TriState fEnabled; |
| GrGLIRect fRect; |
| void invalidate() { |
| fEnabled = kUnknown_TriState; |
| fRect.invalidate(); |
| } |
| } fHWScissorSettings; |
| |
| GrGLIRect fHWViewport; |
| |
| /** |
| * Tracks vertex attrib array state. |
| */ |
| class HWVertexArrayState { |
| public: |
| HWVertexArrayState() : fCoreProfileVertexArray(nullptr) { this->invalidate(); } |
| |
| ~HWVertexArrayState() { delete fCoreProfileVertexArray; } |
| |
| void invalidate() { |
| fBoundVertexArrayIDIsValid = false; |
| fDefaultVertexArrayAttribState.invalidate(); |
| if (fCoreProfileVertexArray) { |
| fCoreProfileVertexArray->invalidateCachedState(); |
| } |
| } |
| |
| void notifyVertexArrayDelete(GrGLuint id) { |
| if (fBoundVertexArrayIDIsValid && fBoundVertexArrayID == id) { |
| // Does implicit bind to 0 |
| fBoundVertexArrayID = 0; |
| } |
| } |
| |
| void setVertexArrayID(GrGLGpu* gpu, GrGLuint arrayID) { |
| if (!gpu->glCaps().vertexArrayObjectSupport()) { |
| SkASSERT(0 == arrayID); |
| return; |
| } |
| if (!fBoundVertexArrayIDIsValid || arrayID != fBoundVertexArrayID) { |
| GR_GL_CALL(gpu->glInterface(), BindVertexArray(arrayID)); |
| fBoundVertexArrayIDIsValid = true; |
| fBoundVertexArrayID = arrayID; |
| } |
| } |
| |
| /** |
| * Binds the vertex array that should be used for internal draws, and returns its attrib |
| * state. This binds the default VAO (ID=zero) unless we are on a core profile, in which |
| * case we use a dummy array instead. |
| * |
| * If an index buffer is privided, it will be bound to the vertex array. Otherwise the |
| * index buffer binding will be left unchanged. |
| * |
| * The returned GrGLAttribArrayState should be used to set vertex attribute arrays. |
| */ |
| GrGLAttribArrayState* bindInternalVertexArray(GrGLGpu*, const GrGLBuffer* ibuff = nullptr); |
| |
| private: |
| GrGLuint fBoundVertexArrayID; |
| bool fBoundVertexArrayIDIsValid; |
| |
| // We return a non-const pointer to this from bindArrayAndBuffersToDraw when vertex array 0 |
| // is bound. However, this class is internal to GrGLGpu and this object never leaks out of |
| // GrGLGpu. |
| GrGLAttribArrayState fDefaultVertexArrayAttribState; |
| |
| // This is used when we're using a core profile. |
| GrGLVertexArray* fCoreProfileVertexArray; |
| } fHWVertexArrayState; |
| |
| struct { |
| GrGLenum fGLTarget; |
| uint32_t fBoundBufferUniqueID; |
| bool fBufferZeroKnownBound; |
| |
| void invalidate() { |
| fBoundBufferUniqueID = SK_InvalidUniqueID; |
| fBufferZeroKnownBound = false; |
| } |
| } fHWBufferState[kGrBufferTypeCount]; |
| |
| struct { |
| GrBlendEquation fEquation; |
| GrBlendCoeff fSrcCoeff; |
| GrBlendCoeff fDstCoeff; |
| GrColor fConstColor; |
| bool fConstColorValid; |
| TriState fEnabled; |
| |
| void invalidate() { |
| fEquation = static_cast<GrBlendEquation>(-1); |
| fSrcCoeff = static_cast<GrBlendCoeff>(-1); |
| fDstCoeff = static_cast<GrBlendCoeff>(-1); |
| fConstColorValid = false; |
| fEnabled = kUnknown_TriState; |
| } |
| } fHWBlendState; |
| |
| TriState fMSAAEnabled; |
| |
| GrStencilSettings fHWStencilSettings; |
| TriState fHWStencilTestEnabled; |
| |
| |
| GrPipelineBuilder::DrawFace fHWDrawFace; |
| TriState fHWWriteToColor; |
| uint32_t fHWBoundRenderTargetUniqueID; |
| TriState fHWSRGBFramebuffer; |
| SkTArray<uint32_t, true> fHWBoundTextureUniqueIDs; |
| |
| struct BufferTexture { |
| BufferTexture() : fTextureID(0), fKnownBound(false), |
| fAttachedBufferUniqueID(SK_InvalidUniqueID), |
| fSwizzle(GrSwizzle::RGBA()) {} |
| |
| GrGLuint fTextureID; |
| bool fKnownBound; |
| intptr_t fOffsetInBytes; |
| GrPixelConfig fTexelConfig; |
| size_t fAttachedSizeInBytes; |
| uint32_t fAttachedBufferUniqueID; |
| GrSwizzle fSwizzle; |
| }; |
| |
| SkTArray<BufferTexture, true> fHWBufferTextures; |
| int fHWMaxUsedBufferTextureUnit; |
| |
| // EXT_raster_multisample. |
| TriState fHWRasterMultisampleEnabled; |
| int fHWNumRasterSamples; |
| ///@} |
| |
| /** IDs for copy surface program. */ |
| struct { |
| GrGLuint fProgram; |
| GrGLint fTextureUniform; |
| GrGLint fTexCoordXformUniform; |
| GrGLint fPosXformUniform; |
| } fCopyPrograms[3]; |
| SkAutoTUnref<GrGLBuffer> fCopyProgramArrayBuffer; |
| |
| struct { |
| GrGLuint fProgram; |
| GrGLint fColorUniform; |
| GrGLint fRectUniform; |
| } fWireRectProgram; |
| SkAutoTUnref<GrGLBuffer> fWireRectArrayBuffer; |
| |
| static int TextureTargetToCopyProgramIdx(GrGLenum target) { |
| switch (target) { |
| case GR_GL_TEXTURE_2D: |
| return 0; |
| case GR_GL_TEXTURE_EXTERNAL: |
| return 1; |
| case GR_GL_TEXTURE_RECTANGLE: |
| return 2; |
| default: |
| SkFAIL("Unexpected texture target type."); |
| return 0; |
| } |
| } |
| |
| struct { |
| GrGLuint fProgram; |
| GrGLint fPosXformUniform; |
| SkAutoTUnref<GrGLBuffer> fArrayBuffer; |
| } fPLSSetupProgram; |
| |
| bool fHWPLSEnabled; |
| bool fPLSHasBeenUsed; |
| |
| float fHWMinSampleShading; |
| |
| typedef GrGpu INHERITED; |
| friend class GrGLPathRendering; // For accessing setTextureUnit. |
| }; |
| |
| #endif |